Users Guide

Table Of Contents
DHCP and USB Auto-Configuration 547
Image File
If the Auto Configuration process includes a switch image upgrade, the name
of the image file may optionally be included in the *.setup file. If it is desired
to assign a specific image to a specific set of switches. If it is desired to use a
single image for all switches being upgraded, it is not necessary to include the
image file name in the .setup file as long as it is present on the USB device.
The specified image file should exist on the USB device.
What Is the Setup File Format?
The setup file must have a *.setup extension or this part of the Auto
Configuration process will never begin. If there are multiple .setup files
located on the USB device, the dellswitch.setup file will be utilized. If no
dellswitch.setup file is present and there are multiple .setup files present, the
Auto Configuration process does not start.
The general format of the configuration file lines is as follows. The IP address
and subnet mask are always required on each line of the .setup file. The MAC
address, configuration file, and image file name entries are optional.
MAC_address IP_Address Subnet_Mask Config_File Image_File
The following example shows a *.setup example for two switches:
2180.c200.0010 192.168.0.10 255.255.255.0 switch-A.text N2000v6.0.1.3.stk
3380.c200.0011 192.168.0.11 255.255.255.0 switch-B.text N2000v6.0.1.3.stk
After a line has been read and implemented by the Auto Configuration
feature, it automatically adds “in-use” to the end of the line to ensure that the
information is not utilized for the next switch. To replicate the entire USB
auto configuration process, the “in-use” statements from the .setup file need
to be removed while leaving the inserted MAC address information. Then, if
the process is restarted, the MAC address/IP address combinations will be
ensured for any switch that has previously attempted upgrade and all other
switch upgrades can take place as if for the first time.
What Is the DHCP Auto Configuration Process?
If the USB Auto Configuration fails or is not used, the switch can use a
DHCP server to obtain configuration information from a TFTP server.
DHCP Auto Configuration is initiated every time the switch receives an
address lease via DHCP.
DHCP Auto Configuration is accomplished in three phases: